Ford Explorer Suv 2018 – A Complete Maintenance And Performance
The 2018 Ford Explorer remains a top choice for families and adventurers needing a mix of towing power and interior space. This guide covers essential DIY maintenance, common mechanical pain points, and performance upgrades to help you get the most out of your vehicle.
Owning a ford explorer suv 2018 means you have a versatile machine capable of daily commuting and rugged weekend escapes. However, like any complex vehicle, it requires a specific maintenance approach to avoid costly shop visits. If you are ready to pick up a wrench, this guide will walk you through the technical nuances of this specific model year.
We all want a vehicle that starts every morning without hesitation and handles the trails without a groan. You might be worried about some of the known issues whispered about in owner forums, such as water pump failures or transmission stutters. I promise to break down these concerns into manageable DIY steps and clear “when to call a pro” signals.
In the following sections, we will explore engine-specific care, the critical importance of PTU fluid changes, and how to optimize your suspension for off-road use. By the end of this article, you will have a professional-grade roadmap for maintaining your fifth-generation Explorer. Let’s dive into the details and get your hands a little dirty.
Understanding the ford explorer suv 2018 Drivetrain Options
Before you start buying parts, you must identify which heart beats under the hood of your ford explorer suv 2018. Ford offered three distinct engines this year, each with its own set of maintenance requirements and performance characteristics. Knowing your engine code is the first step in any successful DIY project.
The base engine is the 3.5L Ti-VCT V6, a naturally aspirated workhorse known for its relative simplicity. If you have the Limited or Sport trims, you likely have the 2.3L EcoBoost four-cylinder or the powerful 3.5L Twin-Turbo EcoBoost V6. Each of these engines utilizes a turbocharger system that requires high-quality synthetic oil to prevent “coking” in the oil lines.
Transmission choices are standard across the board with the 6-speed SelectShift automatic. While Ford marketed this as a low-maintenance unit, experienced mechanics suggest regular fluid drain-and-fills. This is especially true if you use your SUV for heavy towing or frequent stop-and-go city driving.
The 3.5L EcoBoost vs. Naturally Aspirated V6
The 3.5L EcoBoost is a favorite for those who want 365 horsepower and 350 lb-ft of torque. However, the added complexity of twin turbos means you must be diligent about vacuum leaks and spark plug gaps. Turbocharged engines are more sensitive to spark plug wear, which can lead to “shuddering” under heavy acceleration.
The naturally aspirated 3.5L V6 is generally easier to work on because the engine bay is less cramped. You have better access to the alternator and drive belts. While it lacks the punch of the EcoBoost, it provides a linear power delivery that many long-term owners prefer for its reliability.
Transmission and AWD Systems
Most 2018 models come equipped with Intelligent 4WD and the Terrain Management System. This system uses a Power Transfer Unit (PTU) to send power to the rear wheels. The PTU is a known weak point in this generation, often because the fluid is “sealed for life” but sits very close to the hot exhaust.
If you want your AWD system to last, you should consider a PTU fluid exchange every 30,000 miles. This requires a fluid extraction pump, as most 2018 units do not have a traditional drain plug. Using a high-quality 75W-140 full synthetic gear oil can prevent the fluid from turning into “sludge.”
Essential Maintenance for Your ford explorer suv 2018
Regular maintenance is the difference between a vehicle that lasts 100,000 miles and one that reaches 250,000 miles. For the ford explorer suv 2018, the manufacturer’s schedule is a starting point, but proactive owners often follow a more rigorous plan. This is particularly important if you live in extreme climates or enjoy off-roading.
Start with the basics: oil and filters. Always use a Motorcraft FL-500S or equivalent high-quality oil filter. For the EcoBoost engines, 5W-30 full synthetic oil is non-negotiable. The turbochargers rely on clean oil for cooling and lubrication, and cheap conventional oil can break down under the high heat these engines produce.
Air filters are often overlooked but are vital for fuel economy. A clogged engine air filter forces the engine to work harder, reducing your MPG. If you drive on dusty trails, check your filter every 5,000 miles. A quick visual inspection can tell you if it is time for a replacement.
Brake System Care and Upgrades
The Explorer is a heavy vehicle, weighing in at nearly 5,000 pounds. This puts a massive strain on the brake rotors and pads. If you feel a vibration in the steering wheel when slowing down, your front rotors are likely warped from heat soak.
When replacing pads, I recommend ceramic brake pads for everyday driving. They produce less dust and offer a more consistent “bite” than semi-metallic options. For those who tow heavy trailers, look into “heavy-duty” or “towing” grade rotors that feature better heat dissipation properties.
Cooling System Vigilance
The 2018 model uses Orange or Yellow OAT (Organic Acid Technology) coolant. Never mix different colors of coolant, as this can lead to gel formation that clogs the radiator. Check your coolant level at every oil change to ensure there are no slow leaks.
Keep a close eye on the weep hole of the water pump if you have the 3.5L V6. On this specific engine design, the water pump is internal and driven by the timing chain. If it fails, it can leak coolant directly into the oil pan, which can destroy the engine in minutes.
Common Mechanical Issues and DIY Troubleshooting
Every vehicle has its quirks, and the ford explorer suv 2018 is no exception. Being able to identify these issues early can save you thousands of dollars in labor costs. One of the most reported issues involves the rear suspension toe links, which were subject to several recalls.
If you hear a clunking noise from the rear when going over bumps, inspect your toe links and bushings. While some of these repairs are covered under recall, you should know how to spot the wear. Look for torn rubber boots or excessive play when the wheel is off the ground.
Another common complaint is the “carbon monoxide” smell inside the cabin during hard acceleration. This is often caused by unsealed body seams or exhaust leaks near the rear of the vehicle. While Ford has issued service bulletins for this, a DIYer can check for exhaust soot around the tailpipe resonators.
Addressing the “PTU Smell”
If you smell something like “burnt propane” or “rotten eggs” after a long drive, your PTU fluid is likely overheating. As mentioned earlier, the PTU fluid can cook because of its proximity to the exhaust. If you see thick, black gunk leaking from the PTU vent, it is time for an immediate fluid change.
To fix this, you will need to jack up the vehicle safely using jack stands. Use a suction gun to pull out as much old fluid as possible through the fill plug. Refill it with fresh synthetic gear oil until it just starts to weep back out of the fill hole.
Electrical and SYNC 3 Glitches
The 2018 model features the SYNC 3 infotainment system, which is generally reliable but can occasionally freeze. Most software issues can be resolved by a master reset in the settings menu. If the screen stays black, check the fuse box located under the driver’s side dashboard.
Battery life is also a factor. The Explorer uses an AGM battery in many trims, which requires a specific charging profile. If you replace the battery yourself, you must reset the Battery Management System (BMS) so the alternator knows it is dealing with a new cell.
Off-Road Setup and Performance Modifications
While the ford explorer suv 2018 is a unibody crossover, it is surprisingly capable on light-to-moderate trails. To make it a true weekend warrior, you need to address the ground clearance and tire choice. The factory tires are designed for highway comfort, not mud or jagged rocks.
A leveling kit is a popular first mod. It usually involves a 1.5 to 2-inch spacer on the front struts to level the stance and provide room for larger tires. This simple change significantly improves the “approach angle,” preventing the front air dam from scraping on obstacles.
For tires, look into a “mild” All-Terrain (A/T) tire like the BFGoodrich KO2 or Falken Wildpeak A/T3W. These provide much better traction on loose dirt without creating excessive road noise on the highway. Ensure you maintain the correct load rating for the vehicle’s weight.
Optimizing the Terrain Management System
The dial in your center console isn’t just for show. It recalibrates the ABS, throttle response, and traction control. For example, “Sand Mode” allows for more wheel spin to maintain momentum, while “Mud/Ruts” sharpens the torque delivery to the wheels with the most grip.
When off-roading, always remember to turn off traction control manually if you find yourself stuck. Sometimes the computer cuts power too aggressively when it senses slip, which is the opposite of what you need in deep mud. Experiment with these settings in a safe, flat area before hitting steep inclines.
Upgrading the Lighting
The stock halogen fog lights are often underwhelming for night-time trail navigation. Upgrading to LED fog light pods can vastly improve your peripheral vision. Many companies offer “bolt-on” brackets that fit into the factory bumper openings, making this a clean DIY install.
If you plan on doing serious night driving, a hidden light bar behind the lower grille is a great way to add lumens without ruining the sleek look of the SUV. Just ensure you wire it with a dedicated relay and fuse to protect your vehicle’s electrical system.
Safety First: Tools and Precautions for the DIY Mechanic
Working on your ford explorer suv 2018 requires the right tools and a safety-first mindset. Never work under a vehicle supported only by a hydraulic jack. Always use heavy-duty jack stands rated for at least 3 tons. The weight of an SUV can be unforgiving if a jack fails.
A basic metric socket set (8mm to 21mm) will cover 90% of the bolts on this vehicle. You will also need a torque wrench. Components like lug nuts and brake caliper bolts must be tightened to specific foot-pound settings to prevent them from backing out or snapping.
Before starting any electrical work, disconnect the negative battery terminal. This prevents accidental airbag deployment or short-circuiting expensive control modules. Use a small “memory saver” plugged into the OBD-II port if you want to keep your radio presets and clock settings intact.
When to Seek Professional Help
DIY pride is great, but knowing your limits is better. If you suspect an internal water pump failure (milky oil or rapid coolant loss), this is a job for a professional or a very advanced mechanic. It requires removing the timing chain, which is a high-stakes procedure.
Similarly, if you experience “hard shifts” or “slipping” in the transmission, take it to a reputable transmission shop for a diagnostic scan. The 6F50 transmission is complex, and internal repairs require specialized hydraulic tools that most home garages lack.
Safe Trail Practices
If you take your Explorer off-road, never go alone. Always carry a recovery strap and a basic first-aid kit. If you get stuck in a remote area, stay with your vehicle. It is much easier for search parties or park rangers to find a large SUV than a person walking on foot.
Check your tire pressures before and after a trail run. Lowering your pressure to about 20-25 PSI can help with traction, but you must reinflate them before driving at highway speeds. Driving on under-inflated tires on pavement can cause a blowout due to heat buildup.
Frequently Asked Questions About the ford explorer suv 2018
What is the most common problem with the 2018 Ford Explorer?
The most frequently reported issues involve the internal water pump on the 3.5L V6 engines and the PTU (Power Transfer Unit) overheating in AWD models. Regular fluid changes and cooling system inspections are the best ways to mitigate these risks.
How often should I change the oil in my 2018 Explorer?
While the Intelligent Oil-Life Monitor might suggest longer intervals, most experts recommend every 5,000 to 7,500 miles using full synthetic oil. This is especially critical for EcoBoost engines to protect the turbochargers from heat-related wear.
Can the 2018 Ford Explorer tow a travel trailer?
Yes, when properly equipped with the Class III Trailer Tow Package, the 2018 Explorer can tow up to 5,000 pounds. Always use a weight-distributing hitch for trailers over 2,000 pounds to maintain steering control and braking stability.
Does the 2018 Explorer have Apple CarPlay and Android Auto?
Yes, the 2018 model comes with SYNC 3, which supports both Apple CarPlay and Android Auto. You simply need to connect your phone via a high-quality USB cable to the hub in the center console.
Conclusion: Keeping Your Explorer on the Road
Maintaining a ford explorer suv 2018 is a rewarding experience for any DIY enthusiast. By staying ahead of fluid changes, monitoring the cooling system, and understanding the unique needs of the AWD system, you can ensure your vehicle remains a reliable partner for all your journeys. Whether you are hauling the family to soccer practice or exploring a remote mountain trail, a well-maintained SUV provides peace of mind.
Don’t be intimidated by the technology under the hood. Take it one project at a time, use the right diagnostic tools, and never compromise on safety. The fifth-generation Explorer is a robust platform that responds well to consistent care and high-quality parts. Grab your tools, follow the steps we’ve discussed, and enjoy the satisfaction of a job well done.
Stay safe, keep your tires aired up, and we will see you on the road or the trail. Happy wrenching!
- Smallest Chevrolet Car – Maximizing Utility And Efficiency - September 28, 2026
- Chevrolet Small Car Models – A Practical Owner’S Guide To Maintenance - September 28, 2026
- Chevrolet Hhr Miles Per Gallon – Real-World Efficiency And Maintenance - September 28, 2026